CAIE IGCSE Biology 11.1.6 Internal and External Intercostal Questions
Practise identifying internal and external intercostal muscles in diagrams of ribs and the thorax.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- label an external intercostal muscle in a thorax diagram
CAIE IGCSE Biology 11.1.6 Internal and External Intercostal Questions question 1
Fig. 1.1 is a diagram of the gas exchange system in humans.
Fig. 1.1
Draw a label line and the letter X on Fig. 1.1 to identify an external intercostal muscle.
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